US52612A - Elliot savage - Google Patents
Elliot savage Download PDFInfo
- Publication number
- US52612A US52612A US52612DA US52612A US 52612 A US52612 A US 52612A US 52612D A US52612D A US 52612DA US 52612 A US52612 A US 52612A
- Authority
- US
- United States
- Prior art keywords
- annealing
- savage
- elliot
- steel
- metal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 229910052751 metal Inorganic materials 0.000 description 11
- 239000002184 metal Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 11
- 238000000137 annealing Methods 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 150000002739 metals Chemical class 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- NNFCIKHAZHQZJG-UHFFFAOYSA-N potassium cyanide Chemical compound [K+].N#[C-] NNFCIKHAZHQZJG-UHFFFAOYSA-N 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/34—Methods of heating
- C21D1/44—Methods of heating in heat-treatment baths
- C21D1/46—Salt baths
Definitions
- My invention relates to the annealing of steel or other metals; and in order that my new method may be the better understood I will explain briefly the old process of annealing and state the advantages which I obtain from my invention.
- My process consists in heating the metal to he annealed in a bath, such as cyanide of potassium heated to redness, or any other sub stance which allows of the heating of the metal without oxidizing, by theformation upon the surface of a film or coating whereby the metal is protected from the action of the air during the process of cooling.
- a bath such as cyanide of potassium heated to redness, or any other sub stance which allows of the heating of the metal without oxidizing, by theformation upon the surface of a film or coating whereby the metal is protected from the action of the air during the process of cooling.
- I allow the metal to remain in the bath until it attains about the same temperature as the bath, when it becomes soft, and after allowing the softened metal to cool sufficiently I submerge it in clear water, or, by preference, in a metallic solution, in order to remove from the surface of the softened metal any particles of the cyanide of potassium which may adhere from the heated bath.
- claim- 1 The method ofannealingsteelorothermetals, substantially as hereinbefore described-'- that is to say, by heating the-same in a substance which shall form upon its surface a protecting coating or film soluble in water or metallic cooling solutions, as set forth.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Description
UNITED STATES PATENT OFFICE.
ELLIOT SAVAGE, OF WEST MERIDEN, CONNECTICUT, ASSIGNOR TO ELLIOT SAVAGE, GEO. S. HARWOOD, AND'GEO. H. QUINCY.
PROCESS OF ANNEALING STEEL AND OTHER METALS.
Specification forming part of Letters Patent No. 52,612, dated February 13, 1866.
To all whom it may concern:
Be it known that I, ELLIOT SAVAGE, of West Meriden, in the county of New Haven and State of Connecticut, have invented certain new and useful Improvements in Annealing Steel and other Metals; and I hereby declare that-the following is a full, clear, and exact description of the same.
My invention relates to the annealing of steel or other metals; and in order that my new method may be the better understood I will explain briefly the old process of annealing and state the advantages which I obtain from my invention.
By the old method of annealingsteel, for example, has been heated in ordinary fires or furnaces, excluding the air as much as possible, but not entirely, and the result has been the surface of the steel has been oxidized, rendering the employment of acids to remove the scale absolutely needful before working-as, for instance, in the process of wire-drawing, the scale, being excessively hard, must be removed before the wire can be reduced in size by drawing.
My process consists in heating the metal to he annealed in a bath, such as cyanide of potassium heated to redness, or any other sub stance which allows of the heating of the metal without oxidizing, by theformation upon the surface of a film or coating whereby the metal is protected from the action of the air during the process of cooling.
I allow the metal to remain in the bath until it attains about the same temperature as the bath, when it becomes soft, and after allowing the softened metal to cool sufficiently I submerge it in clear water, or, by preference, in a metallic solution, in order to remove from the surface of the softened metal any particles of the cyanide of potassium which may adhere from the heated bath.
Having thus described my invention, I
claim- 1. The method ofannealingsteelorothermetals, substantially as hereinbefore described-'- that is to say, by heating the-same in a substance which shall form upon its surface a protecting coating or film soluble in water or metallic cooling solutions, as set forth.
2. The use of cyanide of potassium for the purpose of heating steel or other metals in the process of annealing.
3. The use of metallic solutions for the purpose of cooling steel or other metals in the process of annealing.
4. The employment, in the process of annealing, of cyanide of potassium as the heating medium, in combination with a metallic solution as the cooling medium.
In testimony whereof I have signed my name to this specification before two subscribing witnesses.
' ELLIOT SAVAGE.
Witnesses:
WM. H. SWEETSER, WM. J. QUINoY.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US52612A true US52612A (en) | 1866-02-13 |
Family
ID=2122157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US52612D Expired - Lifetime US52612A (en) | Elliot savage |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US52612A (en) |
-
0
- US US52612D patent/US52612A/en not_active Expired - Lifetime
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